So does any one know... Is it safe to run untuned with bolt ons? Or with some bolt ons but not with others? Just wondering the effect to the car. I know I won't see the power gains that I want until I get tuned, an that's fine. But without a tune is it ok?

 

I ran a K&N and catless downpipe for over a month before getting tuned. You'll be fine, but I wouldn't make it long term.

 

Oh ok, I've got k&n right now and want to do more mods, but don't wanna **** anything up lol